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<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2012 The Netty Project</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * The Netty Project licenses this file to you under the Apache License,</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * version 2.0 (the "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * with the License. You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.channel.socket.nio;
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.Channel;
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelException;
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelFuture;
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.logging.InternalLogger;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.logging.InternalLoggerFactory;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.util.ThreadNameDeterminer;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.util.ThreadRenamingRunnable;
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.util.internal.DeadLockProofWorker;
<a class="jxr_linenumber" name="26" href="#26">26</a>  
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> java.nio.channels.CancelledKeyException;
<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> java.nio.channels.DatagramChannel;
<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> java.nio.channels.SelectableChannel;
<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> java.nio.channels.SelectionKey;
<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> java.nio.channels.Selector;
<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> java.nio.channels.SocketChannel;
<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> java.util.ConcurrentModificationException;
<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> java.util.Queue;
<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.ConcurrentLinkedQueue;
<a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.CountDownLatch;
<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.Executor;
<a class="jxr_linenumber" name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.RejectedExecutionException;
<a class="jxr_linenumber" name="40" href="#40">40</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.atomic.AtomicBoolean;
<a class="jxr_linenumber" name="41" href="#41">41</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.atomic.AtomicInteger;
<a class="jxr_linenumber" name="42" href="#42">42</a>  
<a class="jxr_linenumber" name="43" href="#43">43</a>  <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/channel/socket/nio/AbstractNioSelector.html">AbstractNioSelector</a> <strong class="jxr_keyword">implements</strong> <a href="../../../../../../org/jboss/netty/channel/socket/nio/NioSelector.html">NioSelector</a> {
<a class="jxr_linenumber" name="44" href="#44">44</a>  
<a class="jxr_linenumber" name="45" href="#45">45</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> AtomicInteger nextId = <strong class="jxr_keyword">new</strong> AtomicInteger();
<a class="jxr_linenumber" name="46" href="#46">46</a>  
<a class="jxr_linenumber" name="47" href="#47">47</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> id = nextId.incrementAndGet();
<a class="jxr_linenumber" name="48" href="#48">48</a>  
<a class="jxr_linenumber" name="49" href="#49">49</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="50" href="#50">50</a>  <em class="jxr_javadoccomment">     * Internal Netty logger.</em>
<a class="jxr_linenumber" name="51" href="#51">51</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="52" href="#52">52</a>      <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/jboss/netty/logging/InternalLogger.html">InternalLogger</a> logger = <a href="../../../../../../org/jboss/netty/logging/InternalLoggerFactory.html">InternalLoggerFactory</a>
<a class="jxr_linenumber" name="53" href="#53">53</a>              .getInstance(AbstractNioSelector.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="54" href="#54">54</a>  
<a class="jxr_linenumber" name="55" href="#55">55</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> CLEANUP_INTERVAL = 256; <em class="jxr_comment">// XXX Hard-coded value, but won't need customization.</em>
<a class="jxr_linenumber" name="56" href="#56">56</a>  
<a class="jxr_linenumber" name="57" href="#57">57</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment">     * Executor used to execute {@link Runnable}s such as channel registration</em>
<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment">     * task.</em>
<a class="jxr_linenumber" name="60" href="#60">60</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="61" href="#61">61</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Executor executor;
<a class="jxr_linenumber" name="62" href="#62">62</a>  
<a class="jxr_linenumber" name="63" href="#63">63</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment">     * If this worker has been started thread will be a reference to the thread</em>
<a class="jxr_linenumber" name="65" href="#65">65</a>  <em class="jxr_javadoccomment">     * used when starting. i.e. the current thread when the run method is executed.</em>
<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="67" href="#67">67</a>      <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">volatile</strong> Thread thread;
<a class="jxr_linenumber" name="68" href="#68">68</a>  
<a class="jxr_linenumber" name="69" href="#69">69</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment">     * The NIO {@link Selector}.</em>
<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="72" href="#72">72</a>      <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">volatile</strong> Selector selector;
<a class="jxr_linenumber" name="73" href="#73">73</a>  
<a class="jxr_linenumber" name="74" href="#74">74</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment">     * Boolean that controls determines if a blocked Selector.select should</em>
<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment">     * break out of its selection process. In our case we use a timeone for</em>
<a class="jxr_linenumber" name="77" href="#77">77</a>  <em class="jxr_javadoccomment">     * the select method and the select method will block for that time unless</em>
<a class="jxr_linenumber" name="78" href="#78">78</a>  <em class="jxr_javadoccomment">     * waken up.</em>
<a class="jxr_linenumber" name="79" href="#79">79</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="80" href="#80">80</a>      <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> AtomicBoolean wakenUp = <strong class="jxr_keyword">new</strong> AtomicBoolean();
<a class="jxr_linenumber" name="81" href="#81">81</a>  
<a class="jxr_linenumber" name="82" href="#82">82</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Queue&lt;Runnable&gt; taskQueue = <strong class="jxr_keyword">new</strong> ConcurrentLinkedQueue&lt;Runnable&gt;();
<a class="jxr_linenumber" name="83" href="#83">83</a>  
<a class="jxr_linenumber" name="84" href="#84">84</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">int</strong> cancelledKeys; <em class="jxr_comment">// should use AtomicInteger but we just need approximation</em>
<a class="jxr_linenumber" name="85" href="#85">85</a>  
<a class="jxr_linenumber" name="86" href="#86">86</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> CountDownLatch shutdownLatch = <strong class="jxr_keyword">new</strong> CountDownLatch(1);
<a class="jxr_linenumber" name="87" href="#87">87</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">boolean</strong> shutdown;
<a class="jxr_linenumber" name="88" href="#88">88</a>  
<a class="jxr_linenumber" name="89" href="#89">89</a>      <a href="../../../../../../org/jboss/netty/channel/socket/nio/AbstractNioSelector.html">AbstractNioSelector</a>(Executor executor) {
<a class="jxr_linenumber" name="90" href="#90">90</a>          <strong class="jxr_keyword">this</strong>(executor, <strong class="jxr_keyword">null</strong>);
<a class="jxr_linenumber" name="91" href="#91">91</a>      }
<a class="jxr_linenumber" name="92" href="#92">92</a>  
<a class="jxr_linenumber" name="93" href="#93">93</a>      <a href="../../../../../../org/jboss/netty/channel/socket/nio/AbstractNioSelector.html">AbstractNioSelector</a>(Executor executor, <a href="../../../../../../org/jboss/netty/util/ThreadNameDeterminer.html">ThreadNameDeterminer</a> determiner) {
<a class="jxr_linenumber" name="94" href="#94">94</a>          <strong class="jxr_keyword">this</strong>.executor = executor;
<a class="jxr_linenumber" name="95" href="#95">95</a>          openSelector(determiner);
<a class="jxr_linenumber" name="96" href="#96">96</a>      }
<a class="jxr_linenumber" name="97" href="#97">97</a>  
<a class="jxr_linenumber" name="98" href="#98">98</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> register(<a href="../../../../../../org/jboss/netty/channel/Channel.html">Channel</a> channel, <a href="../../../../../../org/jboss/netty/channel/ChannelFuture.html">ChannelFuture</a> future) {
<a class="jxr_linenumber" name="99" href="#99">99</a>          Runnable task = createRegisterTask(channel, future);
<a class="jxr_linenumber" name="100" href="#100">100</a>         registerTask(task);
<a class="jxr_linenumber" name="101" href="#101">101</a>     }
<a class="jxr_linenumber" name="102" href="#102">102</a> 
<a class="jxr_linenumber" name="103" href="#103">103</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> registerTask(Runnable task) {
<a class="jxr_linenumber" name="104" href="#104">104</a>         taskQueue.add(task);
<a class="jxr_linenumber" name="105" href="#105">105</a> 
<a class="jxr_linenumber" name="106" href="#106">106</a>         Selector selector = <strong class="jxr_keyword">this</strong>.selector;
<a class="jxr_linenumber" name="107" href="#107">107</a> 
<a class="jxr_linenumber" name="108" href="#108">108</a>         <strong class="jxr_keyword">if</strong> (selector != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="109" href="#109">109</a>             <strong class="jxr_keyword">if</strong> (wakenUp.compareAndSet(false, <strong class="jxr_keyword">true</strong>)) {
<a class="jxr_linenumber" name="110" href="#110">110</a>                 selector.wakeup();
<a class="jxr_linenumber" name="111" href="#111">111</a>             }
<a class="jxr_linenumber" name="112" href="#112">112</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="113" href="#113">113</a>             <strong class="jxr_keyword">if</strong> (taskQueue.remove(task)) {
<a class="jxr_linenumber" name="114" href="#114">114</a>                 <em class="jxr_comment">// the selector was null this means the Worker has already been shutdown.</em>
<a class="jxr_linenumber" name="115" href="#115">115</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> RejectedExecutionException(<span class="jxr_string">"Worker has already been shutdown"</span>);
<a class="jxr_linenumber" name="116" href="#116">116</a>             }
<a class="jxr_linenumber" name="117" href="#117">117</a>         }
<a class="jxr_linenumber" name="118" href="#118">118</a>     }
<a class="jxr_linenumber" name="119" href="#119">119</a> 
<a class="jxr_linenumber" name="120" href="#120">120</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> isIoThread() {
<a class="jxr_linenumber" name="121" href="#121">121</a>         <strong class="jxr_keyword">return</strong> Thread.currentThread() == thread;
<a class="jxr_linenumber" name="122" href="#122">122</a>     }
<a class="jxr_linenumber" name="123" href="#123">123</a> 
<a class="jxr_linenumber" name="124" href="#124">124</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> rebuildSelector() {
<a class="jxr_linenumber" name="125" href="#125">125</a>         <strong class="jxr_keyword">if</strong> (!isIoThread()) {
<a class="jxr_linenumber" name="126" href="#126">126</a>             taskQueue.add(<strong class="jxr_keyword">new</strong> Runnable() {
<a class="jxr_linenumber" name="127" href="#127">127</a>                 <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> run() {
<a class="jxr_linenumber" name="128" href="#128">128</a>                     rebuildSelector();
<a class="jxr_linenumber" name="129" href="#129">129</a>                 }
<a class="jxr_linenumber" name="130" href="#130">130</a>             });
<a class="jxr_linenumber" name="131" href="#131">131</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="132" href="#132">132</a>         }
<a class="jxr_linenumber" name="133" href="#133">133</a> 
<a class="jxr_linenumber" name="134" href="#134">134</a>         <strong class="jxr_keyword">final</strong> Selector oldSelector = selector;
<a class="jxr_linenumber" name="135" href="#135">135</a>         <strong class="jxr_keyword">final</strong> Selector newSelector;
<a class="jxr_linenumber" name="136" href="#136">136</a> 
<a class="jxr_linenumber" name="137" href="#137">137</a>         <strong class="jxr_keyword">if</strong> (oldSelector == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="138" href="#138">138</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="139" href="#139">139</a>         }
<a class="jxr_linenumber" name="140" href="#140">140</a> 
<a class="jxr_linenumber" name="141" href="#141">141</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="142" href="#142">142</a>             newSelector = Selector.open();
<a class="jxr_linenumber" name="143" href="#143">143</a>         } <strong class="jxr_keyword">catch</strong> (Exception e) {
<a class="jxr_linenumber" name="144" href="#144">144</a>             logger.warn(<span class="jxr_string">"Failed to create a new Selector."</span>, e);
<a class="jxr_linenumber" name="145" href="#145">145</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="146" href="#146">146</a>         }
<a class="jxr_linenumber" name="147" href="#147">147</a> 
<a class="jxr_linenumber" name="148" href="#148">148</a>         <em class="jxr_comment">// Register all channels to the new Selector.</em>
<a class="jxr_linenumber" name="149" href="#149">149</a>         <strong class="jxr_keyword">int</strong> nChannels = 0;
<a class="jxr_linenumber" name="150" href="#150">150</a>         <strong class="jxr_keyword">for</strong> (;;) {
<a class="jxr_linenumber" name="151" href="#151">151</a>             <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="152" href="#152">152</a>                 <strong class="jxr_keyword">for</strong> (SelectionKey key: oldSelector.keys()) {
<a class="jxr_linenumber" name="153" href="#153">153</a>                     <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="154" href="#154">154</a>                         <strong class="jxr_keyword">if</strong> (key.channel().keyFor(newSelector) != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="155" href="#155">155</a>                             <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="156" href="#156">156</a>                         }
<a class="jxr_linenumber" name="157" href="#157">157</a> 
<a class="jxr_linenumber" name="158" href="#158">158</a>                         <strong class="jxr_keyword">int</strong> interestOps = key.interestOps();
<a class="jxr_linenumber" name="159" href="#159">159</a>                         key.cancel();
<a class="jxr_linenumber" name="160" href="#160">160</a>                         key.channel().register(newSelector, interestOps, key.attachment());
<a class="jxr_linenumber" name="161" href="#161">161</a>                         nChannels ++;
<a class="jxr_linenumber" name="162" href="#162">162</a>                     } <strong class="jxr_keyword">catch</strong> (Exception e) {
<a class="jxr_linenumber" name="163" href="#163">163</a>                         logger.warn(<span class="jxr_string">"Failed to re-register a Channel to the new Selector,"</span>, e);
<a class="jxr_linenumber" name="164" href="#164">164</a>                         close(key);
<a class="jxr_linenumber" name="165" href="#165">165</a>                     }
<a class="jxr_linenumber" name="166" href="#166">166</a>                 }
<a class="jxr_linenumber" name="167" href="#167">167</a>             } <strong class="jxr_keyword">catch</strong> (ConcurrentModificationException e) {
<a class="jxr_linenumber" name="168" href="#168">168</a>                 <em class="jxr_comment">// Probably due to concurrent modification of the key set.</em>
<a class="jxr_linenumber" name="169" href="#169">169</a>                 <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="170" href="#170">170</a>             }
<a class="jxr_linenumber" name="171" href="#171">171</a> 
<a class="jxr_linenumber" name="172" href="#172">172</a>             <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="173" href="#173">173</a>         }
<a class="jxr_linenumber" name="174" href="#174">174</a> 
<a class="jxr_linenumber" name="175" href="#175">175</a>         selector = newSelector;
<a class="jxr_linenumber" name="176" href="#176">176</a> 
<a class="jxr_linenumber" name="177" href="#177">177</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="178" href="#178">178</a>             <em class="jxr_comment">// time to close the old selector as everything else is registered to the new one</em>
<a class="jxr_linenumber" name="179" href="#179">179</a>             oldSelector.close();
<a class="jxr_linenumber" name="180" href="#180">180</a>         } <strong class="jxr_keyword">catch</strong> (Throwable t) {
<a class="jxr_linenumber" name="181" href="#181">181</a>             <strong class="jxr_keyword">if</strong> (logger.isWarnEnabled()) {
<a class="jxr_linenumber" name="182" href="#182">182</a>                 logger.warn(<span class="jxr_string">"Failed to close the old Selector."</span>, t);
<a class="jxr_linenumber" name="183" href="#183">183</a>             }
<a class="jxr_linenumber" name="184" href="#184">184</a>         }
<a class="jxr_linenumber" name="185" href="#185">185</a> 
<a class="jxr_linenumber" name="186" href="#186">186</a>         logger.info(<span class="jxr_string">"Migrated "</span> + nChannels + <span class="jxr_string">" channel(s) to the new Selector,"</span>);
<a class="jxr_linenumber" name="187" href="#187">187</a>     }
<a class="jxr_linenumber" name="188" href="#188">188</a> 
<a class="jxr_linenumber" name="189" href="#189">189</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> run() {
<a class="jxr_linenumber" name="190" href="#190">190</a>         thread = Thread.currentThread();
<a class="jxr_linenumber" name="191" href="#191">191</a> 
<a class="jxr_linenumber" name="192" href="#192">192</a>         <strong class="jxr_keyword">int</strong> selectReturnsImmediately = 0;
<a class="jxr_linenumber" name="193" href="#193">193</a>         Selector selector = <strong class="jxr_keyword">this</strong>.selector;
<a class="jxr_linenumber" name="194" href="#194">194</a> 
<a class="jxr_linenumber" name="195" href="#195">195</a>         <strong class="jxr_keyword">if</strong> (selector == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="196" href="#196">196</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="197" href="#197">197</a>         }
<a class="jxr_linenumber" name="198" href="#198">198</a>         <em class="jxr_comment">// use 80% of the timeout for measure</em>
<a class="jxr_linenumber" name="199" href="#199">199</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> minSelectTimeout = SelectorUtil.SELECT_TIMEOUT_NANOS * 80 / 100;
<a class="jxr_linenumber" name="200" href="#200">200</a>         <strong class="jxr_keyword">boolean</strong> wakenupFromLoop = false;
<a class="jxr_linenumber" name="201" href="#201">201</a>         <strong class="jxr_keyword">for</strong> (;;) {
<a class="jxr_linenumber" name="202" href="#202">202</a>             wakenUp.set(false);
<a class="jxr_linenumber" name="203" href="#203">203</a> 
<a class="jxr_linenumber" name="204" href="#204">204</a>             <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="205" href="#205">205</a>                 <strong class="jxr_keyword">long</strong> beforeSelect = System.nanoTime();
<a class="jxr_linenumber" name="206" href="#206">206</a>                 <strong class="jxr_keyword">int</strong> selected = select(selector);
<a class="jxr_linenumber" name="207" href="#207">207</a>                 <strong class="jxr_keyword">if</strong> (SelectorUtil.EPOLL_BUG_WORKAROUND &amp;&amp; selected == 0 &amp;&amp; !wakenupFromLoop &amp;&amp; !wakenUp.get()) {
<a class="jxr_linenumber" name="208" href="#208">208</a>                     <strong class="jxr_keyword">long</strong> timeBlocked = System.nanoTime() - beforeSelect;
<a class="jxr_linenumber" name="209" href="#209">209</a> 
<a class="jxr_linenumber" name="210" href="#210">210</a>                     <strong class="jxr_keyword">if</strong> (timeBlocked &lt; minSelectTimeout) {
<a class="jxr_linenumber" name="211" href="#211">211</a>                         <strong class="jxr_keyword">boolean</strong> notConnected = false;
<a class="jxr_linenumber" name="212" href="#212">212</a>                         <em class="jxr_comment">// loop over all keys as the selector may was unblocked because of a closed channel</em>
<a class="jxr_linenumber" name="213" href="#213">213</a>                         <strong class="jxr_keyword">for</strong> (SelectionKey key: selector.keys()) {
<a class="jxr_linenumber" name="214" href="#214">214</a>                             SelectableChannel ch = key.channel();
<a class="jxr_linenumber" name="215" href="#215">215</a>                             <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="216" href="#216">216</a>                                 <strong class="jxr_keyword">if</strong> (ch instanceof DatagramChannel &amp;&amp; !((DatagramChannel) ch).isConnected() ||
<a class="jxr_linenumber" name="217" href="#217">217</a>                                         ch instanceof SocketChannel &amp;&amp; !((SocketChannel) ch).isConnected()) {
<a class="jxr_linenumber" name="218" href="#218">218</a>                                     notConnected = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="219" href="#219">219</a>                                     <em class="jxr_comment">// cancel the key just to be on the safe side</em>
<a class="jxr_linenumber" name="220" href="#220">220</a>                                     key.cancel();
<a class="jxr_linenumber" name="221" href="#221">221</a>                                 }
<a class="jxr_linenumber" name="222" href="#222">222</a>                             } <strong class="jxr_keyword">catch</strong> (CancelledKeyException e) {
<a class="jxr_linenumber" name="223" href="#223">223</a>                                 <em class="jxr_comment">// ignore</em>
<a class="jxr_linenumber" name="224" href="#224">224</a>                             }
<a class="jxr_linenumber" name="225" href="#225">225</a>                         }
<a class="jxr_linenumber" name="226" href="#226">226</a>                         <strong class="jxr_keyword">if</strong> (notConnected) {
<a class="jxr_linenumber" name="227" href="#227">227</a>                             selectReturnsImmediately = 0;
<a class="jxr_linenumber" name="228" href="#228">228</a>                         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="229" href="#229">229</a>                             <em class="jxr_comment">// returned before the minSelectTimeout elapsed with nothing select.</em>
<a class="jxr_linenumber" name="230" href="#230">230</a>                             <em class="jxr_comment">// this may be the cause of the jdk epoll(..) bug, so increment the counter</em>
<a class="jxr_linenumber" name="231" href="#231">231</a>                             <em class="jxr_comment">// which we use later to see if its really the jdk bug.</em>
<a class="jxr_linenumber" name="232" href="#232">232</a>                             selectReturnsImmediately ++;
<a class="jxr_linenumber" name="233" href="#233">233</a>                         }
<a class="jxr_linenumber" name="234" href="#234">234</a>                     } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="235" href="#235">235</a>                         selectReturnsImmediately = 0;
<a class="jxr_linenumber" name="236" href="#236">236</a>                     }
<a class="jxr_linenumber" name="237" href="#237">237</a> 
<a class="jxr_linenumber" name="238" href="#238">238</a>                     <strong class="jxr_keyword">if</strong> (selectReturnsImmediately == 1024) {
<a class="jxr_linenumber" name="239" href="#239">239</a>                         <em class="jxr_comment">// The selector returned immediately for 10 times in a row,</em>
<a class="jxr_linenumber" name="240" href="#240">240</a>                         <em class="jxr_comment">// so recreate one selector as it seems like we hit the</em>
<a class="jxr_linenumber" name="241" href="#241">241</a>                         <em class="jxr_comment">// famous epoll(..) jdk bug.</em>
<a class="jxr_linenumber" name="242" href="#242">242</a>                         rebuildSelector();
<a class="jxr_linenumber" name="243" href="#243">243</a>                         selector = <strong class="jxr_keyword">this</strong>.selector;
<a class="jxr_linenumber" name="244" href="#244">244</a>                         selectReturnsImmediately = 0;
<a class="jxr_linenumber" name="245" href="#245">245</a>                         wakenupFromLoop = false;
<a class="jxr_linenumber" name="246" href="#246">246</a>                         <em class="jxr_comment">// try to select again</em>
<a class="jxr_linenumber" name="247" href="#247">247</a>                         <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="248" href="#248">248</a>                     }
<a class="jxr_linenumber" name="249" href="#249">249</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="250" href="#250">250</a>                     <em class="jxr_comment">// reset counter</em>
<a class="jxr_linenumber" name="251" href="#251">251</a>                     selectReturnsImmediately = 0;
<a class="jxr_linenumber" name="252" href="#252">252</a>                 }
<a class="jxr_linenumber" name="253" href="#253">253</a> 
<a class="jxr_linenumber" name="254" href="#254">254</a>                 <em class="jxr_comment">// 'wakenUp.compareAndSet(false, true)' is always evaluated</em>
<a class="jxr_linenumber" name="255" href="#255">255</a>                 <em class="jxr_comment">// before calling 'selector.wakeup()' to reduce the wake-up</em>
<a class="jxr_linenumber" name="256" href="#256">256</a>                 <em class="jxr_comment">// overhead. (Selector.wakeup() is an expensive operation.)</em>
<a class="jxr_linenumber" name="257" href="#257">257</a>                 <em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="258" href="#258">258</a>                 <em class="jxr_comment">// However, there is a race condition in this approach.</em>
<a class="jxr_linenumber" name="259" href="#259">259</a>                 <em class="jxr_comment">// The race condition is triggered when 'wakenUp' is set to</em>
<a class="jxr_linenumber" name="260" href="#260">260</a>                 <em class="jxr_comment">// true too early.</em>
<a class="jxr_linenumber" name="261" href="#261">261</a>                 <em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="262" href="#262">262</a>                 <em class="jxr_comment">// 'wakenUp' is set to true too early if:</em>
<a class="jxr_linenumber" name="263" href="#263">263</a>                 <em class="jxr_comment">// 1) Selector is waken up between 'wakenUp.set(false)' and</em>
<a class="jxr_linenumber" name="264" href="#264">264</a>                 <em class="jxr_comment">//    'selector.select(...)'. (BAD)</em>
<a class="jxr_linenumber" name="265" href="#265">265</a>                 <em class="jxr_comment">// 2) Selector is waken up between 'selector.select(...)' and</em>
<a class="jxr_linenumber" name="266" href="#266">266</a>                 <em class="jxr_comment">//    'if (wakenUp.get()) { ... }'. (OK)</em>
<a class="jxr_linenumber" name="267" href="#267">267</a>                 <em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="268" href="#268">268</a>                 <em class="jxr_comment">// In the first case, 'wakenUp' is set to true and the</em>
<a class="jxr_linenumber" name="269" href="#269">269</a>                 <em class="jxr_comment">// following 'selector.select(...)' will wake up immediately.</em>
<a class="jxr_linenumber" name="270" href="#270">270</a>                 <em class="jxr_comment">// Until 'wakenUp' is set to false again in the next round,</em>
<a class="jxr_linenumber" name="271" href="#271">271</a>                 <em class="jxr_comment">// 'wakenUp.compareAndSet(false, true)' will fail, and therefore</em>
<a class="jxr_linenumber" name="272" href="#272">272</a>                 <em class="jxr_comment">// any attempt to wake up the Selector will fail, too, causing</em>
<a class="jxr_linenumber" name="273" href="#273">273</a>                 <em class="jxr_comment">// the following 'selector.select(...)' call to block</em>
<a class="jxr_linenumber" name="274" href="#274">274</a>                 <em class="jxr_comment">// unnecessarily.</em>
<a class="jxr_linenumber" name="275" href="#275">275</a>                 <em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="276" href="#276">276</a>                 <em class="jxr_comment">// To fix this problem, we wake up the selector again if wakenUp</em>
<a class="jxr_linenumber" name="277" href="#277">277</a>                 <em class="jxr_comment">// is true immediately after selector.select(...).</em>
<a class="jxr_linenumber" name="278" href="#278">278</a>                 <em class="jxr_comment">// It is inefficient in that it wakes up the selector for both</em>
<a class="jxr_linenumber" name="279" href="#279">279</a>                 <em class="jxr_comment">// the first case (BAD - wake-up required) and the second case</em>
<a class="jxr_linenumber" name="280" href="#280">280</a>                 <em class="jxr_comment">// (OK - no wake-up required).</em>
<a class="jxr_linenumber" name="281" href="#281">281</a> 
<a class="jxr_linenumber" name="282" href="#282">282</a>                 <strong class="jxr_keyword">if</strong> (wakenUp.get()) {
<a class="jxr_linenumber" name="283" href="#283">283</a>                     wakenupFromLoop = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="284" href="#284">284</a>                     selector.wakeup();
<a class="jxr_linenumber" name="285" href="#285">285</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="286" href="#286">286</a>                     wakenupFromLoop = false;
<a class="jxr_linenumber" name="287" href="#287">287</a>                 }
<a class="jxr_linenumber" name="288" href="#288">288</a> 
<a class="jxr_linenumber" name="289" href="#289">289</a>                 cancelledKeys = 0;
<a class="jxr_linenumber" name="290" href="#290">290</a>                 processTaskQueue();
<a class="jxr_linenumber" name="291" href="#291">291</a>                 selector = <strong class="jxr_keyword">this</strong>.selector; <em class="jxr_comment">// processTaskQueue() can call rebuildSelector()</em>
<a class="jxr_linenumber" name="292" href="#292">292</a> 
<a class="jxr_linenumber" name="293" href="#293">293</a>                 <strong class="jxr_keyword">if</strong> (shutdown) {
<a class="jxr_linenumber" name="294" href="#294">294</a>                     <strong class="jxr_keyword">this</strong>.selector = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="295" href="#295">295</a> 
<a class="jxr_linenumber" name="296" href="#296">296</a>                     <em class="jxr_comment">// process one time again</em>
<a class="jxr_linenumber" name="297" href="#297">297</a>                     processTaskQueue();
<a class="jxr_linenumber" name="298" href="#298">298</a> 
<a class="jxr_linenumber" name="299" href="#299">299</a>                     <strong class="jxr_keyword">for</strong> (SelectionKey k: selector.keys()) {
<a class="jxr_linenumber" name="300" href="#300">300</a>                         close(k);
<a class="jxr_linenumber" name="301" href="#301">301</a>                     }
<a class="jxr_linenumber" name="302" href="#302">302</a> 
<a class="jxr_linenumber" name="303" href="#303">303</a>                     <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="304" href="#304">304</a>                         selector.close();
<a class="jxr_linenumber" name="305" href="#305">305</a>                     } <strong class="jxr_keyword">catch</strong> (IOException e) {
<a class="jxr_linenumber" name="306" href="#306">306</a>                         logger.warn(
<a class="jxr_linenumber" name="307" href="#307">307</a>                                 <span class="jxr_string">"Failed to close a selector."</span>, e);
<a class="jxr_linenumber" name="308" href="#308">308</a>                     }
<a class="jxr_linenumber" name="309" href="#309">309</a>                     shutdownLatch.countDown();
<a class="jxr_linenumber" name="310" href="#310">310</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="311" href="#311">311</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="312" href="#312">312</a>                     process(selector);
<a class="jxr_linenumber" name="313" href="#313">313</a>                 }
<a class="jxr_linenumber" name="314" href="#314">314</a>             } <strong class="jxr_keyword">catch</strong> (Throwable t) {
<a class="jxr_linenumber" name="315" href="#315">315</a>                 logger.warn(
<a class="jxr_linenumber" name="316" href="#316">316</a>                         <span class="jxr_string">"Unexpected exception in the selector loop."</span>, t);
<a class="jxr_linenumber" name="317" href="#317">317</a> 
<a class="jxr_linenumber" name="318" href="#318">318</a>                 <em class="jxr_comment">// Prevent possible consecutive immediate failures that lead to</em>
<a class="jxr_linenumber" name="319" href="#319">319</a>                 <em class="jxr_comment">// excessive CPU consumption.</em>
<a class="jxr_linenumber" name="320" href="#320">320</a>                 <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="321" href="#321">321</a>                     Thread.sleep(1000);
<a class="jxr_linenumber" name="322" href="#322">322</a>                 } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
<a class="jxr_linenumber" name="323" href="#323">323</a>                     <em class="jxr_comment">// Ignore.</em>
<a class="jxr_linenumber" name="324" href="#324">324</a>                 }
<a class="jxr_linenumber" name="325" href="#325">325</a>             }
<a class="jxr_linenumber" name="326" href="#326">326</a>         }
<a class="jxr_linenumber" name="327" href="#327">327</a>     }
<a class="jxr_linenumber" name="328" href="#328">328</a> 
<a class="jxr_linenumber" name="329" href="#329">329</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="330" href="#330">330</a> <em class="jxr_javadoccomment">     * Start the {@link AbstractNioWorker} and return the {@link Selector} that will be used for</em>
<a class="jxr_linenumber" name="331" href="#331">331</a> <em class="jxr_javadoccomment">     * the {@link AbstractNioChannel}'s when they get registered</em>
<a class="jxr_linenumber" name="332" href="#332">332</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="333" href="#333">333</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> openSelector(<a href="../../../../../../org/jboss/netty/util/ThreadNameDeterminer.html">ThreadNameDeterminer</a> determiner) {
<a class="jxr_linenumber" name="334" href="#334">334</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="335" href="#335">335</a>             selector = Selector.open();
<a class="jxr_linenumber" name="336" href="#336">336</a>         } <strong class="jxr_keyword">catch</strong> (Throwable t) {
<a class="jxr_linenumber" name="337" href="#337">337</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/channel/ChannelException.html">ChannelException</a>(<span class="jxr_string">"Failed to create a selector."</span>, t);
<a class="jxr_linenumber" name="338" href="#338">338</a>         }
<a class="jxr_linenumber" name="339" href="#339">339</a> 
<a class="jxr_linenumber" name="340" href="#340">340</a>         <em class="jxr_comment">// Start the worker thread with the new Selector.</em>
<a class="jxr_linenumber" name="341" href="#341">341</a>         <strong class="jxr_keyword">boolean</strong> success = false;
<a class="jxr_linenumber" name="342" href="#342">342</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="343" href="#343">343</a>             DeadLockProofWorker.start(executor, newThreadRenamingRunnable(id, determiner));
<a class="jxr_linenumber" name="344" href="#344">344</a>             success = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="345" href="#345">345</a>         } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="346" href="#346">346</a>             <strong class="jxr_keyword">if</strong> (!success) {
<a class="jxr_linenumber" name="347" href="#347">347</a>                 <em class="jxr_comment">// Release the Selector if the execution fails.</em>
<a class="jxr_linenumber" name="348" href="#348">348</a>                 <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="349" href="#349">349</a>                     selector.close();
<a class="jxr_linenumber" name="350" href="#350">350</a>                 } <strong class="jxr_keyword">catch</strong> (Throwable t) {
<a class="jxr_linenumber" name="351" href="#351">351</a>                     logger.warn(<span class="jxr_string">"Failed to close a selector."</span>, t);
<a class="jxr_linenumber" name="352" href="#352">352</a>                 }
<a class="jxr_linenumber" name="353" href="#353">353</a>                 selector = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="354" href="#354">354</a>                 <em class="jxr_comment">// The method will return to the caller at this point.</em>
<a class="jxr_linenumber" name="355" href="#355">355</a>             }
<a class="jxr_linenumber" name="356" href="#356">356</a>         }
<a class="jxr_linenumber" name="357" href="#357">357</a>         assert selector != <strong class="jxr_keyword">null</strong> &amp;&amp; selector.isOpen();
<a class="jxr_linenumber" name="358" href="#358">358</a>     }
<a class="jxr_linenumber" name="359" href="#359">359</a> 
<a class="jxr_linenumber" name="360" href="#360">360</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> processTaskQueue() {
<a class="jxr_linenumber" name="361" href="#361">361</a>         <strong class="jxr_keyword">for</strong> (;;) {
<a class="jxr_linenumber" name="362" href="#362">362</a>             <strong class="jxr_keyword">final</strong> Runnable task = taskQueue.poll();
<a class="jxr_linenumber" name="363" href="#363">363</a>             <strong class="jxr_keyword">if</strong> (task == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="364" href="#364">364</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="365" href="#365">365</a>             }
<a class="jxr_linenumber" name="366" href="#366">366</a>             task.run();
<a class="jxr_linenumber" name="367" href="#367">367</a>             <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="368" href="#368">368</a>                 cleanUpCancelledKeys();
<a class="jxr_linenumber" name="369" href="#369">369</a>             } <strong class="jxr_keyword">catch</strong> (IOException e) {
<a class="jxr_linenumber" name="370" href="#370">370</a>                 <em class="jxr_comment">// Ignore</em>
<a class="jxr_linenumber" name="371" href="#371">371</a>             }
<a class="jxr_linenumber" name="372" href="#372">372</a>         }
<a class="jxr_linenumber" name="373" href="#373">373</a>     }
<a class="jxr_linenumber" name="374" href="#374">374</a> 
<a class="jxr_linenumber" name="375" href="#375">375</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> increaseCancelledKeys() {
<a class="jxr_linenumber" name="376" href="#376">376</a>         cancelledKeys ++;
<a class="jxr_linenumber" name="377" href="#377">377</a>     }
<a class="jxr_linenumber" name="378" href="#378">378</a> 
<a class="jxr_linenumber" name="379" href="#379">379</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> cleanUpCancelledKeys() <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="380" href="#380">380</a>         <strong class="jxr_keyword">if</strong> (cancelledKeys &gt;= CLEANUP_INTERVAL) {
<a class="jxr_linenumber" name="381" href="#381">381</a>             cancelledKeys = 0;
<a class="jxr_linenumber" name="382" href="#382">382</a>             selector.selectNow();
<a class="jxr_linenumber" name="383" href="#383">383</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="384" href="#384">384</a>         }
<a class="jxr_linenumber" name="385" href="#385">385</a>         <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="386" href="#386">386</a>     }
<a class="jxr_linenumber" name="387" href="#387">387</a> 
<a class="jxr_linenumber" name="388" href="#388">388</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> shutdown() {
<a class="jxr_linenumber" name="389" href="#389">389</a>         <strong class="jxr_keyword">if</strong> (isIoThread()) {
<a class="jxr_linenumber" name="390" href="#390">390</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Must not be called from a I/O-Thread to prevent deadlocks!"</span>);
<a class="jxr_linenumber" name="391" href="#391">391</a>         }
<a class="jxr_linenumber" name="392" href="#392">392</a> 
<a class="jxr_linenumber" name="393" href="#393">393</a>         Selector selector = <strong class="jxr_keyword">this</strong>.selector;
<a class="jxr_linenumber" name="394" href="#394">394</a>         shutdown = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="395" href="#395">395</a>         <strong class="jxr_keyword">if</strong> (selector != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="396" href="#396">396</a>             selector.wakeup();
<a class="jxr_linenumber" name="397" href="#397">397</a>         }
<a class="jxr_linenumber" name="398" href="#398">398</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="399" href="#399">399</a>             shutdownLatch.await();
<a class="jxr_linenumber" name="400" href="#400">400</a>         } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
<a class="jxr_linenumber" name="401" href="#401">401</a>             logger.error(<span class="jxr_string">"Interrupted while wait for resources to be released #"</span> + id);
<a class="jxr_linenumber" name="402" href="#402">402</a>             Thread.currentThread().interrupt();
<a class="jxr_linenumber" name="403" href="#403">403</a>         }
<a class="jxr_linenumber" name="404" href="#404">404</a>     }
<a class="jxr_linenumber" name="405" href="#405">405</a> 
<a class="jxr_linenumber" name="406" href="#406">406</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">void</strong> process(Selector selector) <strong class="jxr_keyword">throws</strong> IOException;
<a class="jxr_linenumber" name="407" href="#407">407</a> 
<a class="jxr_linenumber" name="408" href="#408">408</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> select(Selector selector) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="409" href="#409">409</a>         <strong class="jxr_keyword">return</strong> SelectorUtil.select(selector);
<a class="jxr_linenumber" name="410" href="#410">410</a>     }
<a class="jxr_linenumber" name="411" href="#411">411</a> 
<a class="jxr_linenumber" name="412" href="#412">412</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">void</strong> close(SelectionKey k);
<a class="jxr_linenumber" name="413" href="#413">413</a> 
<a class="jxr_linenumber" name="414" href="#414">414</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <a href="../../../../../../org/jboss/netty/util/ThreadRenamingRunnable.html">ThreadRenamingRunnable</a> newThreadRenamingRunnable(<strong class="jxr_keyword">int</strong> id, <a href="../../../../../../org/jboss/netty/util/ThreadNameDeterminer.html">ThreadNameDeterminer</a> determiner);
<a class="jxr_linenumber" name="415" href="#415">415</a> 
<a class="jxr_linenumber" name="416" href="#416">416</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> Runnable createRegisterTask(<a href="../../../../../../org/jboss/netty/channel/Channel.html">Channel</a> channel, <a href="../../../../../../org/jboss/netty/channel/ChannelFuture.html">ChannelFuture</a> future);
<a class="jxr_linenumber" name="417" href="#417">417</a> }
</pre>
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